FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of sulfamide-substituted imidazotriazinones represented by the general formula (I): 
Method involves interaction of compound of the formula (II): 
with sulfuric acid followed by treatment of synthesized substances with thionyl chloride and interaction with amine without their isolation to yield the end compound that is converted if necessary to the corresponding salts or hydrates. Method provides the development of a simple realization of synthesis of sulfamide-substituted imidazotriazinones in large-scale and high yield being without isolation of hydrolysis-sensitive imidazotriazinone sulfonyl chloride in intermediate step with exception of variations in yield at intermediate step of synthesis.
EFFECT: improved method of synthesis.
5 cl, 2 ex
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